WO2020096005A1

WO2020096005A1 - Fastener

Info

Publication number: WO2020096005A1
Application number: PCT/JP2019/043718
Authority: WO
Inventors: 允昌石黒; 中村　達哉
Original assignee: 北川工業株式会社
Priority date: 2018-11-07
Filing date: 2019-11-07
Publication date: 2020-05-14
Also published as: JP7195589B2; JP2020076454A

Abstract

[Problem] To provide a fastener with which one member can be fastened to another member with a gap ensured between the two members, and the effort needed for the fastening work can be reduced. [Solution] The fastener is configured so as to be capable of fastening one of a first member and a second member to the other by being mounted to the surface of the first member and holding the second member. The fastener has a base part, a spacer part, a contact part, and a retaining part. The base part has a joining surface soldered to the first member. The spacer part is configured so as to ensure a gap between the base part and the contact part. The contact part is configured so as to come into contact with the second member through a contact surface. The retaining part is configured so as to be capable of hooking onto the second member and minimizing displacement of the second member in a direction away from the contact surface.

Description

Fixture

The present disclosure relates to a fixture.

A technique is known in which, when fixing the second electronic circuit board to the first electronic circuit board, a spacer is interposed between the two circuit boards to secure a gap between the two electronic circuit boards. (See, for example, Patent Document 1).

Japanese Patent No. 4503155

However, since the spacer described in Patent Document 1 is configured to be fixed by using screws, there is a problem that it takes time to install the spacer.

In one aspect of the present disclosure, it is desirable to provide a fixture that can secure a gap between two members and fix the other member to one member, and can reduce the time and effort required for the fixing work.

One aspect of the present disclosure is a fixture configured to be surface-mounted on a first member and hold a second member so that either one of the first member and the second member can be fixed to the other. It has a base portion, a spacer portion, a contact portion, and a retaining portion. The base has a joining surface that is soldered to the first member when the fixture is surface-mounted on the first member. The spacer portion is provided between the base portion and the contact portion, and is configured to secure a space between the base portion and the contact portion. The contact portion has a contact surface that faces away from the joint surface, and is configured to contact the second member at the contact surface when the fixture holds the second member. The retaining portion is configured to be capable of suppressing the second member from being caught in the second member at a position on the opposite side of the contact surface with the second member interposed therebetween and the second member being displaced in the direction away from the contact surface.

According to the fixture thus configured, the fixture is surface-mounted on the first member. Therefore, the step of attaching the fixture to the first member can be automated, and the labor required for the step can be reduced. In the step of holding the second member on the fixture, the second member is brought into contact with the contact surface of the contact portion, and the retaining portion is hooked on the second member at a position opposite to the contact surface with the second member interposed therebetween. With this, it is possible to prevent the second member from being displaced in the direction away from the contact surface. In this state, a gap is secured between the base portion and the contact portion by the spacer portion. Therefore, as compared with the technique of securing a gap between two members using a spacer and a screw, the labor required for securing a gap between two members and fixing the other member to one member is reduced. be able to.

FIG. 1A is a plan view showing an example of a usage state of the fixture of the embodiment. 1B is a cross-sectional view taken along the line IB-IB in FIG. 1A. FIG. 2A is a perspective view of the fixture of the embodiment seen from the upper right front side. FIG. 2B is a perspective view of the fixture of the embodiment as viewed from the lower left rear side. FIG. 3A is a plan view of the fixture of the embodiment. FIG. 3B is a front view of the fixture of the embodiment. FIG. 3C is a right side view of the fixture of the embodiment. FIG. 3D is a rear view of the fixture of the embodiment. FIG. 3E is a bottom view of the fixture of the embodiment. FIG. 4A is an explanatory diagram showing a state in which the second member is in the first position. FIG. 4B is an explanatory diagram showing a state in which the second member is being displaced from the first position to the second position. FIG. 4C is an explanatory diagram showing a state in which the second member is at the second position. FIG. 4D is an explanatory diagram showing a state in which the displacement of the second member to the first position is suppressed while the second member is displaced from the second position to the first position.

DESCRIPTION OF SYMBOLS 1 ... Fixing device, 11 ... Base part, 11A ... Joining surface, 13 ... Spacer part, 15 ... Contact part, 15A ... Contact surface, 17 ... Stoppage part, 17A ... Guide surface, 19 ... Projecting piece, 21 ... 1st bending Location, 22 ... second bend location, 23 ... third bend location, 24 ... fourth bend location, 25 ... fifth bend location, 26 ... sixth bend location, 27 ... seventh bend location, 29 ... Convex part, 31 ... Hole, 31 ... Mounting hole, 51 ... First member, 52 ... Second member, 61 ... First connector, 62 ... Second connector, 171 ... First part, 172 ... Second part, 173 ... the third part.

Next, the above-described fixture will be described with reference to exemplary embodiments.

In the present embodiment, description will be given by using the front, rear, left, right, up, and down directions that are also shown in the figure. In each of these directions, the direction shown in the front view (see FIG. 3B) of the fixture is directed to the front, the direction shown in the rear view (see FIG. 3D) is directed to the rear, and the left side view (illustrated). (The left side view appears as the right side view and the object.) The direction in which the part appearing in the right side view (see FIG. 3C) is directed to the right, and the direction in which the part appearing in the right side view (see FIG. 3C) is right, and the plan view (see FIG. 3A). .) Is the upper direction, and the direction in which the part appearing in the bottom view (see FIG. 3E) is the lower direction.

However, each of these directions is only the direction specified to briefly explain the relative positions of the parts that make up the fixture. Therefore, it is uncertain in which direction the fixture is directed, for example, when the fixture is used.

[Fixture composition]
As shown in FIGS. 1A and 1B, the fixture 1 is surface-mounted on the first member 51 (the first electronic circuit board in the case of the present embodiment) and the second member 52 (the case of the present embodiment). Holds the second electronic circuit board.), So that one of the first member 51 and the second member 52 (the second member 52 in the case of this embodiment) and the other (the case of this embodiment) is held. The first member 51.) can be fixed. As shown in FIGS. 2A, 2B, 3A, 3B, 3C, 3D and 3E, the fixture 1 has a base portion 11, a spacer portion 13, a contact portion 15, a retaining portion 17 and a protruding piece 19. .

The base portion 11, the spacer portion 13, the contact portion 15, the retaining portion 17, and the protruding piece 19 are integrally formed by a thin metal plate. As shown in FIG. 3C, the thin plate constituting the fixture 1 is subjected to press working, so that the first bending portion 21, the second bending portion 22, and the third bending portion 22 having the centers of curvature parallel to each other are formed. Bending points 23, fourth bending points 24, fifth bending points 25, sixth bending points 26, and seventh bending points 27 are provided. A convex portion 29 is provided at the fifth bent portion 25.

The base portion 11 is a portion on the opposite side of the spacer portion 13 with the first bent portion 21 interposed therebetween, and in this portion, the thickness direction of the thin plate is oriented in the vertical direction in the figure. The lower surface of the base portion 11 is a joint surface 11A that is soldered to the first member 51 when the fixture 1 is surface-mounted on the first member 51.

The spacer portion 13 is a portion between the first bent portion 21 and the second bent portion 22, and the thickness direction of the thin plate is oriented in the front-back direction in the figure in the portion. The spacer portion 13 is provided between the base portion 11 and the contact portion 15, and secures a space between the base portion 11 and the contact portion 15.

The contact portion 15 is a portion between the second bent portion 22 and the third bent portion 23, and the thickness direction of the thin plate is oriented in the vertical direction in the figure in the portion. The contact portion 15 is arranged at a position facing the base portion 11 with a gap therebetween. The contact portion 15 has a contact surface 15A directed in a direction opposite to the joint surface 11A. The contact portion 15 contacts the second member 52 at the contact surface 15 </ b> A when the fixture 1 holds the second member 52. Further, when the fixture 1 is arranged on the first member 51 by the automatic mounting machine, the contact surface 15A is also used as a suction surface sucked by the suction nozzle of the automatic mounting machine.

The retaining portion 17 is composed of a thin plate on the opposite side of the contact portion 15 with the third bent portion 23 interposed therebetween. More specifically, the retaining portion 17 has a first portion 171, a second portion 172, a third portion 173, and the above-mentioned convex portion 29. The first portion 171 is a portion between the third bent portion 23 and the fourth bent portion 24. The second portion 172 is a portion between the fourth bent portion 24 and the fifth bent portion 25. The upper surface of the second portion 172 is a guide surface 17A. Details of the guide surface 17A will be described later. The third portion 173 is a portion on the opposite side of the second portion 172 with the fifth bent portion 25 interposed therebetween.

The retaining portion 17 is configured such that the third portion 173 is brought into contact with the second member 52 and is caught by the second member 52 at a position opposite to the contact surface 15A with the second member 52 interposed therebetween. .. Accordingly, the retaining portion 17 is configured to be able to suppress the second member 52 from being displaced in the direction away from the contact surface 15A when the second member 52 is held between the retaining portion 17 and the contact portion 15.

The protruding piece 19 is composed of a thin plate on the opposite side of the base 11 with the sixth bent portion 26 interposed therebetween. The seventh bent portion 27 is included in the protruding piece 19. The protruding piece 19 is configured to come into contact with the contact portion 15 in advance at the tip in the protruding direction. Thereby, when a force acts on the contact portion 15 from the second member 52 side, the force can be received by both the spacer portion 13 and the protruding piece 19, and the spacer portion 13 can be prevented from buckling. it can. The protruding piece 19 may be in contact with the contact portion 15 in advance, but may be configured to contact the contact portion 15 when the contact portion 15 is displaced toward the base portion 11 side.

A hole 31 is formed in each of the base portion 11 and the spacer portion 13 at a position corresponding to the cut and raised portion of the protruding piece 19. Therefore, it is possible to use the hole 31 to mount the fixture 1 so as to straddle the electronic components mounted on the first member 51. Thereby, the mounting area of the electronic component and the mounting area of the fixture 1 can be overlapped, and the mounting density of these components can be improved.

In the fixture 1 configured as described above, for example, as shown in FIGS. 1A and 1B, the two fixtures 1 are surface-mounted on the first member 51, and the two fixtures 1 form the second member 52. Can be held. In the case of the present embodiment, the first connector 61 is mounted on the upper surface 51A of the first member 51, and the second connector 62 is mounted on the lower surface 52B of the second member 52. The first connector 61 and the second connector 62 are connected to each other, whereby the electronic circuit of the first member 51 and the electronic circuit of the second member 52 are connected. The fixture 1 is in contact with the upper surface 51A of the first member 51, the lower surface 52B of the second member 52, and the upper surface 52A of the second member 52 at locations where a ground potential should be provided, and these three locations are electrically connected. Connected to. At this time, since both the spacer portion 13 and the protruding piece 19 serve as a conduction path between the first member 51 and the second member 52, an increase in impedance is suppressed as compared with the case where only a single conduction path is formed. The effect can be increased.

When attaching the second member 52 between the two fixtures 1, the second member 52 is displaced downward in the figure, and the second member 52 is pushed between the two fixtures 1. At this time, the end portion of the second member 52 contacts the guide surface 17A of the retaining portion 17. When the second member 52 is pushed from the first position (see FIG. 4A) in contact with the guide surface 17A to the second position (see FIG. 4C) in contact with the contact surface 15A, the guide surface 17A forms the second member. Upon receiving a force acting from 52, the second member 52 is slid relative to the second member 52 and swings from the initial position (see FIG. 4A) to the retracted position (the position shown by the solid line in FIG. 4B). This allows the second member 52 to be displaced to the second position.

When the guide surface 17A swings between the initial position and the retracted position, as shown in FIG. 4B, the range from the spacer portion 13 through the contact portion 15 to the retaining portion 17 is elastically deformed and swings. To do. As a result, the spring length of the oscillating portion can be made longer than in the case where only the retaining portion 17 is elastically deformed, and the retaining portion 17 can be provided without applying an excessive force from the second member 52 to the guide surface 17A. Can be easily displaced to the retracted position.

Further, when the guide surface 17A swings between the initial position and the retracted position, the protruding piece 19 swings in the range from the spacer portion 13 through the contact portion 15 to the retaining portion 17 when the guide surface 17A swings from the contact portion 15. While relatively sliding, the contact portion 15 is displaced to a position that does not hinder the displacement of the contact portion 15 (the position indicated by the solid line in FIG. 4B) while elastically deforming. Therefore, the protruding piece 19 does not hinder the displacement of the contact portion 15.

It should be noted that even if an excessive force is applied from the second member 52 to the guide surface 17A of the retaining portion 17 for some reason, the retaining piece 17 may swing greatly clockwise in FIG. 4B. In that case, the protrusion piece 19 swings in the counterclockwise direction in FIG. 4B along with the swinging of the retaining piece 17. Then, when the retaining piece 17 and the protruding piece 19 reach the position shown by an imaginary line in FIG. 4B, the upper end of the protruding piece 19 abuts on the vicinity of the boundary between the spacer portion 13 and the contact portion 15 and protrudes from the retaining piece 17. The pieces 19 are in a state where they prevent each other from swinging. This makes it possible to prevent the retaining piece 17 from swinging further clockwise from the position indicated by the phantom line in FIG. 4B.

When the second member 52 is arranged at the second position (see FIG. 4C), the protruding piece 19 functions as a support body that supports the contact portion 15 from below in FIG. 4C. Therefore, for example, even when a force that pushes the second member 52 downward is generated, the contact portion 15 can be supported by both the spacer portion 13 and the protruding piece 19. Therefore, it is possible to prevent an excessive load from being applied only to the spacer portion 13, and to prevent the spacer portion 13 and the protruding piece 19 from being deformed.

On the other hand, for example, when some unexpected unexpected external force is applied to the second member 52 and the second member 52 is likely to be pulled upward from between the two fixtures 1, the second member 52 moves to the second position (Fig. 4C.) To the first position (see FIG. 4A), the protrusion 29 is caught by the second member 52 as shown in FIG. 4D, so that the second member 52 moves to the first position. Prevents displacement to the position. At this time, a force that attempts to lift the convex portion 29 acts on the range from the spacer portion 13 to the retaining portion 17 via the contact portion 15. However, the force acting in such a direction does not include the component force acting in the direction of displacing the guide surface 17A from the initial position to the retracted position, or if it is included, it is slight. Therefore, the state in which the convex portion 29 is caught by the second member 52 is maintained, and the second member 52 can be prevented from coming off between the two fixtures 1.

On the other hand, when removing the second member 52 from between the two fixtures 1 during maintenance work, the operator applies force to the upper end of the fixture 1 to move the guide surface 17A from the initial position to the retracted position. If displaced, the second member 52 can be removed from between the two fixtures 1. At this time, the force applied by the operator to the upper end of the fixture 1 may be a weak force equivalent to the case where the second member 52 is attached between the two fixtures 1, so that the operator can easily attach the second member 52 to the upper part of the fixture 1. It can be removed from between one fixture 1.

[effect]
According to the fixture 1 as described above, the fixture 1 is surface-mounted on the first member 51, so that the process of attaching the fixture 1 to the first member 51 can be automated, and the manual work can be performed. Can be reduced, and the labor required for the process can be reduced. In addition, in the step of holding the second member 52 on the fixture 1, the second member 52 is brought into contact with the contact surface 15A of the contact portion 15, and the second member 52 is sandwiched between the second member 52 and the contact surface 15A so as not to be pulled out. By hooking the portion 17 on the second member 52, it is possible to suppress the displacement of the second member 52 in the direction away from the contact surface 15A. In this state, a gap is secured between the base portion 11 and the contact portion 15 by the spacer portion 13. Therefore, even if the process is manual work, as compared with a technique in which a spacer and a screw are used to secure a gap between two members, a gap is secured between the two members and It is possible to reduce the labor required for fixing the other member. In addition, since there is room for automation of the step of holding the second member 52 on the fixture 1, if the step is also automated, it is possible to further reduce the manual work and the labor required for the step.

Further, in the case of the present embodiment, it is possible to electrically connect the upper surface 51A of the first member 51, the lower surface 52B of the second member 52 and the upper surface of the second member 52 through the fixture 1 at three points. Therefore, the single fixture 1 can provide ground countermeasures corresponding to the above three locations.

Further, in the case of the present embodiment, when the guide surface 17A is displaced from the initial position to the retracted position, the range from the spacer portion 13 through the contact portion 15 to the retaining portion 17 swings, so that the guide surface is easily formed. 17A can be retracted to the retracted position. On the other hand, when the second member 52 is displaced upward in the figure, the range from the spacer portion 13 through the contact portion 15 to the retaining portion 17 swings. Since it is difficult to do so, it is possible to prevent the second member 52 from coming off from the fixture 1.

[Other Embodiments]
Although the fixing device of the present disclosure has been described above with reference to exemplary embodiments, the above-described embodiment is merely one example of one aspect of the present disclosure. That is, the present disclosure is not limited to the above-described exemplary embodiments, and can be implemented in various forms without departing from the technical idea of the present disclosure.

For example, in the above embodiment, an example in which the two fixtures 1 are surface-mounted on the first member 51 and the second member 52 is held between the two fixtures 1 has been described. Depending on the shape of the sheath, three or more fixtures 1 may be surface-mounted on the first member 51, and the second member 52 may be held by the three or more fixtures 1.

Alternatively, one fixture 1 may be surface-mounted on the first member 51, and the fixture 1 may be configured to cooperate with a member other than the fixture 1 to hold the second member 52. For example, in the above-described embodiment, since the first connector 61 and the second connector 62 are provided, the first connector 61 and the second connector 62 are connected to each other between the connection portion and one fixture 1. It may be configured to hold the two member 52.

Further, in the above-described embodiment, it is described that the fixture 1 surface-mounted on the first member 51 holds the second member 52, but the first member 51 surface-mounted on the fixture 1 is replaced by the second member 52. The fixture 1 can also be used when it is attached to. For example, when it is desired to arrange the electronic circuit board at a position along the panel, the fixture 1 is surface-mounted on the electronic circuit board, and the fixture 1 is inserted into a mounting hole provided in the panel to hold the panel. Thus, the electronic circuit board can be attached to the panel. That is, one of the first member 51 and the second member 52 may be held with respect to the other.

In addition to the above, the function realized by one component in the above embodiment may be realized by a plurality of components. Further, the function realized by a plurality of constituent elements may be realized by one constituent element. Moreover, you may omit a part of structure of the said embodiment.

[Supplement]
In addition, as is clear from the exemplary embodiments described above, the fixture of the present disclosure may further include the following configurations.

In one aspect of the present disclosure, the base portion, the spacer portion, the contact portion, and the retaining portion are integrally molded by a thin metal plate, and the first member and the second member may be electrically connectable. ..

In one aspect of the present disclosure, the thin plate may be bent at the first bending portion, the second bending portion, and the third bending portion that have centers of curvature parallel to each other. The spacer portion may be formed by a thin plate between the first bent portion and the second bent portion. The base portion may be composed of a thin plate on the opposite side of the spacer portion with the first bent portion interposed therebetween. The contact portion may be formed of a thin plate between the second bent portion and the third bent portion, and may be arranged at a position facing the base portion with a gap therebetween. The retaining portion may be formed by a thin plate on the opposite side of the contact portion with the third bent portion interposed therebetween. The base portion may be provided with a protruding piece protruding from the base portion toward the contact portion. The protruding piece may be configured to come into contact with the contact portion in advance at the tip in the protruding direction, or to be brought into contact with the contact portion when the contact portion is displaced toward the base side.

In one aspect of the present disclosure, the retaining portion may have a guide surface and a convex portion. The guide surface receives a force acting from the second member when the second member is pushed from the first position where it contacts the guide surface to the second position where it contacts the contact surface, and the guide surface faces the second member. It may be configured to allow the second member to be displaced to the second position by swinging from the initial position to the retracted position while sliding physically. The convex portion catches on the second member at the time when the second member is in the second position or during the time when the second member is being displaced from the second position to the first position, so that the second member is prevented from being displaced to the first position. It may be configured to suppress. When the guide surface oscillates between the initial position and the retracted position, the range from the spacer portion to the contact portion to the retaining portion may be elastically deformed and oscillated.

In one aspect of the present disclosure, when the guide surface swings between the initial position and the retracted position, when the range from the spacer portion to the retaining portion through the contact portion swings, It may be configured to be displaced to a position that does not hinder the displacement of the contact portion while elastically deforming while relatively sliding.

Claims

A fixture that is surface-mounted on the first member and holds the second member to fix either one of the first member and the second member to the other,
Has a base portion, a spacer portion, a contact portion and a retaining portion,
The base has a joint surface that is soldered to the first member when the fixture is surface-mounted on the first member,
The spacer portion is provided between the base portion and the contact portion, and is configured to secure a gap between the base portion and the contact portion,
The contact portion has a contact surface directed in a direction opposite to the joint surface, and is configured to contact the second member with the contact surface when the fixture holds the second member,
The retaining portion is configured to be capable of suppressing the second member from being caught in the second member at a position opposite to the contact surface with the second member interposed therebetween and the second member being displaced in a direction away from the contact surface. Holding fixture.
The fixture according to claim 1, wherein
The base part, the spacer part, the contact part, and the retaining part are integrally formed by a thin metal plate, and the first member and the second member are electrically connectable to each other.
The fixture according to claim 2, wherein
The thin plate is bent at a first bending point, a second bending point and a third bending point that have centers of curvature parallel to each other,
The spacer portion is formed of the thin plate between the first bending portion and the second bending portion,
The base portion is formed by the thin plate on the opposite side of the spacer portion with the first bent portion interposed therebetween,
The contact portion is configured by the thin plate between the second bending portion and the third bending portion, and is arranged at a position facing the base portion with the gap therebetween.
The retaining portion is constituted by the thin plate on the side opposite to the contact portion with the third bent portion interposed therebetween,
The base portion is provided with a protruding piece protruding from the base portion toward the contact portion,
The projecting piece is configured so as to come into contact with the contact portion at the tip end in the projecting direction in advance, or to come into contact with the contact portion when the contact portion is displaced toward the base side. .
The fixture according to claim 3, wherein
The retaining portion has a guide surface and a convex portion,
The guide surface receives the force acting from the second member when the second member is pushed from the first position where it contacts the guide surface to the second position where it contacts the contact surface, It is configured to allow the second member to be displaced to the second position by swinging from the initial position to the retracted position while sliding relative to the two members,
The convex portion is hooked on the second member at a time when the second member is in the second position or in the middle of displacement from the second position to the first position, whereby the second member is Configured to inhibit displacement to the first position,
When the guide surface swings between the initial position and the retracted position, a range from the spacer portion to the retaining portion via the contact portion is configured to swing while elastically deforming. Holding fixture.
The fixture according to claim 4, wherein
When the guide piece swings between the initial position and the retracted position when the range from the spacer portion to the retaining portion through the contact portion swings, The fixing tool is configured to be elastically deformed while relatively sliding while being displaced to a position that does not hinder the displacement of the contact portion.